the field of medicine that specializes in the study of tumors. oncology. The branch of medicine that deals with the study and treatment of tumors.
Who are they? Millennials are currently aged 20-35, or born between 1980 and the end of 1994 (with some more generous definitions taking in those born up to 2000). They also get called Generation Y, because they follow on from Generation X (born 1965-1979), and other, less flattering names.
Millennials Will Soon Comprise the Largest Demographic in the United States29. There are currently 73 million people age 18 to 34 in the United States.30. While still smaller than the Baby Boom generation, and despite declining from 30% in 1980 to 23% today, this is the largest Millennial population in 30 years.31.